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What is the KA rating of 29372 and 32623 Busbar Adapters for Compact NS/NSX<630 Circuit Breaker.

The breaking capacity (KA rating) of the system with the Busbar Adapters 29372 and 32623 connected with Compact NS/NSX<630 remains the as the Circuit Breaker connected. By adding the Busbar Adapters only the nominal current of Circuit Breaker is derated (see below table).